Apparatus for cutting stencils.



No. 7|2,|24. Patented cums, I902.

S. ELLIOTT.

APPARATUS FOR CUTTING STENCILS.

(Application filed Jan. 8, 1900. Renewed Feb. 8, 1909.)

6 Sheets-Sheet I.

(No Modal.)

ll x A w 00 0 v I J a m m w Q III. ll/lllllllllkllll IIIJK w. h u. wow.H W .l u 1 v) m E Ut a M u I 9 I u 0 I 1| M W W .I v I! 1 U! n F 4 I IIII 9 1 I f I Mn llrll. v a 5., .l. k H l hwn. I 1 1. M -H 2 HIM HI M l u!I III M W f l H 4 m 1 1 l g u R Us 0 I I m H u 7 4 I. 8 w l 7 7 7W/TNESSES N M .H m A NDRRXS warms my, PNOTO-L'WHQ, wAsmNaYom n c.

Patented Oct. 28, 1902.

S. ELLIOTT. APPARATUS FOR CUTTING STENCILS.

(Application filed Jan. 8, 1900. Renewed Feb. 8, 1902'.) I (No Model.) 68heets'Shea t 2.

l [H v 18 I I III 19 I 1 J', T I! H I I nm I I I' Q"' I T H IG I H I 2Q1. h E3 ///A///////////////////////& L I

WITNESSES: W 23 lNVENT //%5 I I," I/

- H '-A NORA/57$,

"m: Norms PETERS c0 PHoYom'ua. WASHINGTON, D4 0,

No. 7|2,|24. .Patented Dot. 28,1902,

s. ELLIOTT. APPARATUS FOR CUTTING STENCILS.

(Application filed Jan. 3, 1900. Renawed Feb. 8,1902.)

(Ilo Model.) a Sheets-Shasta, I n I JC 'i II I II J II o 76 '20 H I "78vO' 46 a I 1 0. 7 WI ll I u I I 9 7 g I .94 v '98 W/ TNESSES ,7

v rrow/Er;

"0,712,124. A Patented Oct. 28, I902.

s. ELLIOTT. I

APPARATUS FOR CUTTING STE NCILS. (Application fi led Jan. 5, 1900. mewea Feb. 8, 1902.

' (No Model.) 6 Shehr-Sheet 4.

WITNESSES-.-

" 3 ATTORNEYS HE Nonms mass :0. Puorau ua, WASHINGTON, n. c.

No. 7|2,|2'4. Patented Oct. 28, 1902.

s nuon v APPARATUS FOR CUTTING STENGILS.

(Application filed I'm. s, 1900. Renewed Feb. 8, 1902.

s s eets-sheet 5.

-(llo Model.)

Z a a.

JNVENTOR.

WITNESSES:

' AZTORIVEK? u. 7|2,|24. Patented Oct. 28, um. s. ELLIOTT.

APPARATUS FOR CUTTING STENOILS.

(Application filed Jan. 5, 1900. Renewed Feb. 8, 1902.)

(No Model.) 6 SheetsSheat 6,

' wrzvzsszs: I INVLiTOR.

.. 11., 4A sar 5 I I Y Aflomvz m.

THE nonms PEYERS co yHoToLrmoq WASHINGTON. n. c.

sheet-carrier.

UNITED STATES- PATENT OFFICE.

STERLING ELLIOTT, OF BOSTON, MASSACHUSETTS, ASSIGNOR TO THE ELLIOTTCOMPANY, OF BOSTON, MASSACHUSETTS, A CORPORATION OF MAINE.

SPECIFICATION forming part of Letters Patent No. 712,124, dated October28, 1902.

Application filed January 8, 1900. Renewed February 8, 1902. Serial No.93,253. (No model.)

o all whom it may concern:

Be itkn own that LSTERLING ELLIoTr,-a citizen of the United States,residing at Boston,

in the county of Suffolk and State of Massa-f chusetts, have inventedcertain new and useful Improvements in Apparatus for Cutting Stencils,of which the following is a specification.

My invention relates to that class of apparatus in which a series oftools each adapted to cut or punch or cut out a separate letter orcharacter is carried by the head or carrier actuated to bring the toolsinto operation as desired; and myinvention consists in certainarrangements of parts and features of construction whereby to secure thedesired accuracy and speed of movements with simplicity of constructionand facility of operations, all as fully set forth hereinafter and asillustrated in the accompanying drawings,in which- Figure 1 is a frontelevation of my improved apparatus. Fig. 2 is a transverse sectionalelevation. Fig. 3 is ascctional plan. Fig. 4 is a longitudinal sectionofthe partsimmediately connected with the main driving-shaft. Fig. 5 isa detached view of the stop-bar and adjuncts. Figs. 6 and '7are faceviews of the cam. Fig. 8 is a rear elevation, in part section, throughthe driving-shaft. Fig. 9 is a transverse section through the table,showing the construction and arrangement of the Fig. 10 is a face viewillustrating the feeding devices for the carrier. Fig. 11 is a plan viewof part of the stop-arm adjuncts.

The head A is reciprocated or rotated, a rotary head being shown and, asshown, is a hollow cylindercarrying the punching, embossing, or printingtools a, each consisting of a bar 10, the lower end of which is properlyshaped, according to the character of the letter of figure to be cutout, and the Whole series of shafts'is arranged in a circle.

The strip of paper or other material X to be punched is carried by asuitable carrier C in position above the table B and is there subjectedto the successive action of the different tools a as the carrier C isfed intermittently sidewise one step after each impression. The carriermoves freely between its guides 13 13, so that it may be set laterallyment, and each bar is depressed after being brought to proper workingposition by the'action of any suitable operating device, which I term apusher. As shown, the pusher D is a lever pivoted at the rear end andextends forward beneath the toggle-like lever E, having at the lower enda roller 15, which when the lever is swung in the direction of itsarrow, Fig. 2, works upon an inclin ed projection 16 on the pusher toforce down the pusher against the upper end of that bar which is below,thereby depressing the latter. is effected by a coiled spring at. Thehead maybe reciprocated or it maybeturned continuously and arrested whenany tool is in operative position below the pusher. As shown, the headnormally rotates in one direction, and a keyboard has different'keys F,the characters designating which correspond to those of the tools, andthe depressing of any key operates stop devices which arrest the headwhen the corresponding tool is below the pusher, the head being heldstationary as long as the key is depressed. While different means may beemployed to secure these results, I will now describe those shown in thedrawings and which have proved to be effective. The head is carried by ashaft 12, and beneath the head A and below the table B a stop-arm Gextends from the shaft 12. over a ring or disk 15, having verticalsockets arranged in a circle for the reception of sliding stop-pins 16,each supported so that its upper end is normally flush with the top ofthe disk. Each stop-pin rests on a rod, bearing with its lower end onone of a series of key-levers 19, connected with the keys, so that'ondepressing a key the rod and the pin 16 connected therewith are lifted,the pin thus lifted acting as a stop against which the arm G contacts toarrest the rotation of the head A when the tool a, which is in operativeThe upward movement of the pusher position above the paper, willcorrespond to the indication on the key depressed. To prevent therebounding of the head from the sudden contact and cessation ofrotation, the arm G is provided with a spring-pawl 20, the end of whichsprings out as a stop-pin is struck by the arm and prevents rebound. Thehead is driven bya shaftP, which is connected frictionally with theshaft 12. At the lower end of the shaft P is a bevel-gear 23, whichgears with a pinion 24: on the drivingshaft H. The shaft P is drivencontinuously, while the shaft 12 and the head are arrested when anyparticular tool is to be stopped in operative position. The headhavingstopped, the pusher above the tool to be operated is depressed bythe action of a cam J, having a face-groove receiving a roller-pin at,Fig. 4, at the lower end of a rod 130, connected to the end of theleverE upon the shaft H, Figs. 3 and 4:, and mounted upon and forming a partof the sleeve 30, loose upon the shaft and having at the end aclutchdisk31, Figs. 4 and 8, the periphery of which consists of a series ofinclines 32. Each of these inclines acts upon a cylinder 33 within aring 34, fixed in a recess of the drive-wheel K. When the wheel K isturned in the direction of its arrow, Fig. 8, and the clutch-disk isstationary, the cylinders 33 are forced out against the face of thering, and the sleeve 30 and cam J are then turned therewith. Eachrevolution of the cam J would effect one operation of the pusher, and inorder to arrest the cam after one complete rotation I provide meanswhereby after each operative movement of the cam J the latter and theparts connected therewith are arrested by throwing the rollers 33 out ofbiting action upon the drivingwheel K. This is effected through themedium of a slotted cage 6, carrying the rollers 33 and to which isconnected an arm 36. A stop-bar L is suitably moved in position to makecontact with the arm 36 after any tool is operated. When the arm 36 isin contact with the bar L, the cage keeps such position in relation tothe clutch-disk 31 that the rollers 33 are held out of biting positionon the ring 34. \Vhen, however, the bar L is carried away from in frontof the arm 36, then a spring ll turns the cage and its arm 36 in thedirection of the arrow 7;, Fig. 8, and carries the rollers up theinclines 32 until they bite with the driving-wheel, and the latter thencarries the clutch-disk and the cam J around with it. The stop-bar L isdrawn away from the arm 36 as the arm G strikes a stop-pin by means ofdevices of any suitable character; but immediately after the arm passesthe bar L the latter is restored to its formerposition, so that when thearm 36 again approaches the bar L it will make contact with the same,thereby holding the cage 6 so that the rollers are released from bitingposition. The

bar L is carried back by the action of a spring 42 when a dog 45 isdepressed from contact with the end of the bar L. The dog 45 isdepressed by the action of a lever 47, carried by the arm G. This lever47 is connected by a rod 48 with a bell-crank lever 49, pivoted into aslot of the shaft 12, and the latter below the lever is hollow toreceive a rod 50, the lower end of which bears upon the dog 45, a spring51 supporting the weight of the rod and tending to throw it up andrestore the bell-crank 47 to normal position. The bar L is restored toplace by an inclined projection 53 upon the outer side of the cam J,which before the latter completes its revolution makes contact with aroller 54; upon the top of the bar L and forces the latteroutward untilits end escapes the end of the dog 45, when the latter is lifted by aspring 55 into a locking position. As the rod 50 is lowered as theresult of the depressing of a key and as it is held down as long as thekey is depressed, it is important that provision be made for the dog 45to rise after being pushed down by the rod and even if the latter isheld down. This is effected by providing the rod 50 with a contactingfiuger,which can be moved out of the way of the dog after depressing thelatter. One arrangement is shown and consists in pivoting a finger orpawl s to the lower end of the rod and providing the bar L with a lug t,which pushes the finger out of the way as the bar moves back.

It is desirable to arrest the movement of the cam J and the partsconnected therewith as soon as practicable after the pusher is operated.I therefore provide a brake M, Fig. 8, with a pad m, operating on theperiphery of the cam J and carried by a spring on a lever and adjustedby a set-screw 61. The cam has an inclined blade 62, which pushes backthe pad against the pressure of the' spring, gradually reducing themotion of the cam, and there is a shoulder or end y, back of which thepad springs into position, looking the cam in place.

When the tools a are punching or cutting tools, it is desirable thatthey should pass sheer through the sheet X and form a stencilcut, and inorder to facilitate this I provide a traveling bed-strip Y, preferablyin the form of one or more strips of thick paper, which pass beneath thestencil sheet X, moving therewith as it is fed step by step andreceiving the portions which are punched from the sheet X by the actionof the tools. It will therefore be seen that these strips are notplatens, but bed-strips, which receive and carry the parts punched outof the stencilsheets. As shown, there are two superposed strips on thebed-strip. The strip Y is fed forward by means of feed-rolls 7O 71,Figs. 1 and 3, operated from any suitable portion of the machine. Forinstance, there is a camgroove w, Figs. 6 and 8, in the outer face ofthe cam J, which groove operates a lever 73 and connects with an arm ona rock-shaft 75,

a rod connected to which extends to a lever 78, carrying a pawl whichengages a ratchet on one of the shafts of the feed-rolls, which aregeared together and so that the vibration 1 of the lever at the time thecarriage is moved also turns the feed-roll shaft and'feeds thebed-strip.

It is extremely desirable that the tools a shall operate with absolutecertainty on their upward movement. As possibly the spring 14 might notact, I provide for positively lifting each tool which is down by meansof a hook 80, extending from the pusher D in position to engage a lug 81upon the bar 10, so that if the bar tends to remain down it will bepositively lifted.

The carrier 0 may be constructed in any suitable manner, and aneffective construction is shown in which there are two pivotedclamping-blades 90 91, a spring 92 bringing them together to clamp thesheet X. The

blade 90 is pivoted at u to two arms 93, pivoted to inclined arms 94,extending from the sliding bar d of the carrier and provided withstop-pins 95, limiting the outward swing of the carrier. The blade 90has a rib at the under side with notches engaging a finger 96 on the barcl, and a spring 97 tends to hold down the blade. This permits the clampto be set in or out to out on different lines or to be turned back toreceive or permit the ready withdrawal of the sheet X. The clamp may befed step by step after successive impressions by any suitable feeddevices. As shown, there is a pawl 98, carried by an arm 99 on therock-shaft 75, which as the pawl 98 is carried upward engages one of therack-teeth on the bar d and acts to move the carriage to the left as thebed-strip is fed by the feed-rolls 71. A spring 100 draws down the pawl,and a friction-pad 101 is forced by a spring against the curved end ofthe pawl to prevent the latter from rebounding. To insure precision ofmovement of the carriageand prevent it from being thrown beyond one stepat a time by momentum, the pawl 98 is provided with a locking-lug 102,which as the pawl is raised to a horizontal position engages one of theteeth of the rack of the bar (1. As in spacing it is necessary to feedthe carriage by hand,

I connect the pawl by a rod 103 with the lever of a key K, which may bedepressed to operate the pawl.

While the stop-pins may be connected with the key-levers in any suitablemanner, a simple and inexpensive construction is shown in which thelower end of each pin and the inner end of each key-lever has a conicalsocket. A rod fits at the end into the sockets, and a spring 108depresses each pin and holds the rod in the sockets.

Any suitable frictional connection may be used to frictionally connectthe shafts P 12. As shown, there is a cup 120 on the shaft P, receivinga disk 121 on the shaft 12, and said disk has an annular flange withopenings for friction-pads 113, against which press spring- 1. Thecombination of means for feeding a continuous bed-strip, a head carryinga series of parallel reciprocating too1s,means for rotating the head,stop devices for arresting the rotation of the head with any desiredtool in operative position, keys and connections for operating the stopdevices, and means independent of thekeys for applyinga continuedpressure during the movement of the tool through the strip to operatesaid tool with a punching effect when brought into operative position,substantially as set forth.

2. The combination of the slotted head, vertically-sliding tools eachwith an adjustable collar having a lug projecting into a slot of thehead, substantially as described.

3. The combination of the rotary head, tools and tool-actuating devices,of a series of stops and keys for shifting the same, a stoparm carriedwith the head, and devices also carried with said head, and arranged tomake contact with the stops, and connections between said devices andthe tool-actuating devices for operating the latter, substantially asdescribed. I

4. The combination of the rotary head and tools, pusher, stop-armcarried with the head, series of stops and actuating-keys,and devicescarried by the arm and connections whereby the pusher is operated fromsaid devices, substantially as described.

5. The combination with thehead, its shaft,

tools and contin uously-rotatin g shaft for driving the head-shaft, andfriction connections between the two shafts, of keys, and stoppingdevices operated therefrom for overcoming the friction and stopping thehead-shaft and head, substantially as described.

6. The combination of the head, continuously-rotating shaft andfriction-wheel carried thereby, of friction-pads carried in unison withthe head, and springs forcing said pads into contact with thefriction-wheel, substantially as described.-

7. The combination of the rotary head, tools, pusher and stop devices,of a continuously-rotating driving-shaft, means for operating thepusher, clutch devices for engagin g the driving-shaft with said means,a stopbar for holding the clutch devices out of action and meansconnected with the stop devices for actuating the stop-bar,substantially as described.

8. The combination with the rotary head,

tools, pusher, continuously-rotating drivingshaft and stop devices, ofthe cam J and connection for operating the pusher, clutch devices forconnecting and disconnecting the cam J and driving-shaft, a stop-bar forhold- &

ing the clutch devices out of operation, and rod 50, and lever 4:7 andconnections for shifting the stop-bar, substantially as described.

9. The combination with the driving-shaft, cam J, clutch devices andstop-bar I and spring 42, dog 45, and rod 50, of the head, tools, andstop-arm, and lever carried by the stop-arm and connected with the rod50, substantially as described.

10. The combination with the drivingshaft, cam J, clutch devices andstop-bar L, and spring 42, dog and rod 50, of the head, tools, andstop-arm lever carried by the head and means for putting the rod whenlowered out of engagement with the dog, substantially as described.

11. The combination with the drivingshaft, cam J, clutch devices andstop-bar I and spring 42, dog 45, and rod 50, of the head and tools andstop-arm, lever carried by the stop-arm and connected'with the rod 50,and means for putting the rod when lowered out of contact with the dog,the said rod having a pivoted lower section, and a lug on the stop-'bar, substantially as described.

12. The combination of the rotary head, tools, and pusher, of a shaftcarrying the head, and a stop-arm and lever 47 carried thereby, astationary disk, and series of movable stop-pins carried thereby, keysconnected to actuate said pins, and means for operating the pusher fromthe lever 47, substantially as described.

13. The combination with a reciprocating punch of a base plate and amovable punchingbed consisting of a continuous strip of yieldingmaterial to receive the blanks punched from the sheet, and means formoving said bed, substantially as described.

14;. The combination with a reciprocating punch of a bed-strip ofyielding material, a

guide beneath the punch for said strip and means for feeding said strip,substantially as described.

15. The combination with a reciprocating punch of a bed-strip ofyielding material composed of superposed layers, a guide beneath thepunch for said strip and means for feeding said strip, substantially asdescribed.

16. The combination of the head-punching tools and means for rotatingand arresting the head and actuating the tools, a bed-strip of yieldingmaterial and means for feeding the same intermittently, substantially asdescribed.

17. The combination of the head-punching tools and means for rotatingand arresting the head and actuating the tools, a bed-strip of yieldingmaterial, guides therefor and means for feeding the same intermittently,substantially as described.

18. The combination of the head-punching tools and means for rotatingand arresting the-head and actuating the tools of a bedstrip of yieldingmaterial guides therefor, and means for feeding the same intermittently,and means for throwing the feed means into and out of operation,substantially as described.

19. The combination of the carriage,clamprack connected to the carriageand actuatingpawl provided with a retaining-lug forengaging the rack andfriction-brake engaging the pawl, substantially as described.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

STERLING ELLIOTT.

Witnesses:

MARGARET R. MAGUIRE, HENRY O. NIOKERSON.

